The effect of age at first calving on milk production of czech fleckvieh cows

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F14%3A00218433" target="_blank" >RIV/62156489:43210/14:00218433 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

čeština

Název v původním jazyce

The effect of age at first calving on milk production of czech fleckvieh cows

Popis výsledku v původním jazyce

In this thesis we dealt with effect of age at first calving on milk production of Czech Fleckvieh at first and second lactation. We analyzed set of about 5 000 pieces of animals from our prominent breeding of Czech Fleckvieh. We evaluate dairy cows, which calve from 26th to 36th month of their life. Next criterion of choice was the length of both first and second lactation, which should be at least 280 days. These criteria fulfil overall 3 155 dairy cows. Their milk yield per lactation was converted tomilk yield per day. Regarding the 1st lactation the highest milk yield per day was set in group of dairy cows, which calved in 36th month of age (23.57 kg of milk per day), and the lowest dairy milk yield in group calved in 32nd month of age (21.51 kg ofmilk per day). If we focus on the milk yield in the 2nd lactation, we will find out, that the highest milk yield reached dairy cows, which calved in 27th month (25.87 kg of milk per day) and the lowest milk yield reached dairy cows, whic

Název v anglickém jazyce

The effect of age at first calving on milk production of czech fleckvieh cows

Popis výsledku anglicky

In this thesis we dealt with effect of age at first calving on milk production of Czech Fleckvieh at first and second lactation. We analyzed set of about 5 000 pieces of animals from our prominent breeding of Czech Fleckvieh. We evaluate dairy cows, which calve from 26th to 36th month of their life. Next criterion of choice was the length of both first and second lactation, which should be at least 280 days. These criteria fulfil overall 3 155 dairy cows. Their milk yield per lactation was converted tomilk yield per day. Regarding the 1st lactation the highest milk yield per day was set in group of dairy cows, which calved in 36th month of age (23.57 kg of milk per day), and the lowest dairy milk yield in group calved in 32nd month of age (21.51 kg ofmilk per day). If we focus on the milk yield in the 2nd lactation, we will find out, that the highest milk yield reached dairy cows, which calved in 27th month (25.87 kg of milk per day) and the lowest milk yield reached dairy cows, whic

Druh

D - Stať ve sborníku

CEP obor

GG - Chov hospodářských zvířat

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Animal Physiology 2014

ISBN

978-80-7375-971-1

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

18-22

Název nakladatele

Mendel University in Brno

Místo vydání

Brno

Místo konání akce

Prušánky

Datum konání akce

21. 5. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—